JPH0345182B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for supplying concrete for dam construction.

Configuration of conventional example and its problems The conventional method of supplying concrete for dam construction will be explained based on Fig. 1. That is, a rail 4 is laid on a slope 3 between an upper work place 1 and a lower dam part 2, and a bucket truck (skip car) 5 and a hopper station 6 that can run freely on this rail 4 are provided. A hoisting device 7 for moving the bucket cart 5 to the work place 1
A bucket plant 8 and a transfer car 9 for transferring concrete from the bucket plant 8 to a bucket truck 5 are provided. In such a conventional configuration, concrete is supplied by transferring the concrete made in the bucket plant 8 to the bucket truck 5 via the transfer car 9.
Then, the bucket cart 5 is guided by the rails 4 to run downward on the slope 3 and transported to the top of the hopper station 6.
This is done by loading the dump truck 10 through a hopper receiver or hopper, and then it is poured from the dump truck 10 onto the dam part 2 and used for dam formation. Additionally, Hopper Station 6 was raised due to the formation of a dam.

The conventional method described above has poor conveyance efficiency,
Also, because there are many transfers, aggregate is more likely to separate than concrete. In addition, the bucket cart 5 is
There were drawbacks such as a large amount of power required to reciprocate between the receiving position from the transfer car 9 and the passing position of the hopper station 6, that is, on the rail 4 once every few minutes.

OBJECTS OF THE INVENTION An object of the present invention is to provide a method for supplying concrete for dam construction that eliminates the above-mentioned conventional drawbacks.

Structure of the Invention In order to achieve the above object, the method for supplying concrete for dam construction according to the present invention includes constructing a tower at an appropriate location on the planned site for construction of a dam body, disposing a batschia plant in the tower so as to be able to move up and down, Raw materials are supplied to the Battiya plant, the mixer in the Battiya plant mixes the raw materials to produce ready-mixed concrete, the ready-mixed concrete is supplied from the Battiya plant to the planned dam construction site, and the dam concrete is poured. The tower is raised as the ground level rises, and the legs of the tower are buried in the dam concrete. After the dam body is completed, the bath plant is removed and the part of the tower that protrudes from the dam body is removed. It is something that is removed.

Embodiment and Operation A first embodiment of the present invention will be described below based on FIGS. 2 to 4. In FIG. 2, reference numeral 12 is a tower constructed at a suitable location on the planned construction site 14 of the dam body 13, and is constructed so that it can be raised as the dam concrete placement surface 15 rises. There is. Reference numeral 16 is a scaffolding device constructed at a position opposite to the tower 12 on the planned construction site 14, the lower part of which is buried in the dam body 13 and can be raised up. 1
7 is a bridge girder extending horizontally from the appropriate ground 18 around the dam body 13 to the scaffolding device 16;
9 is a bridge pier that supports the bridge girder 17, and 20 is a batch plant installed in the tower 12 so as to be able to rise and fall freely.In this embodiment, it has three batch type hoppers, and each hopper is equipped with a mixer and a metering plant. The vessels are arranged for each. 21 to 24 are first to fourth aggregate stock piles, 25 is a sand pile, 26 to 2
9 is the first to fourth aggregate stock piles 21 to 24;
first to fourth aggregate stockers 30 for storing aggregate 32 for, for example, 10 hours, respectively;
34 is a sand stocker for storing the sand 33 in the sand pile 25 for, for example, 10 hours;
35 is a second conveyor for conveying sand 33 from the sand pile 25 to the end of the first conveyor 34; 36 is a conveyor for receiving aggregate 32 and sand 33 from the first conveyor 34; A movable third conveyor 37 is used to feed materials into predetermined stockers 26-30.
A fourth conveyor 30 receives aggregates 32 and sand 33 and transports them to near the bridge girder 17. A fifth conveyor 38 is disposed on the bridge girder 17, and receives aggregates 32 and sand 33 from the fourth conveyor 37. Receiving bridge girder 17
A fifth conveyor 39 is a sixth conveyor whose base end is supported by the tip of the bridge girder 17 so as to be able to move up and down, and conveys the aggregate 32 and sand 33 received from the fifth conveyor 38. Battsiya plant 2
40 is a cement silo, 41 is an admixture stocker, 42 is a water tank, 43, 44, 45 are cement silos 4
0, a supply pipe extending from the admixture stocker 41 and the water tank 42 to the batch plant 20 passing under the bridge girder 17. In Figure 3, 4
Reference numeral 6 denotes a seventh conveyor of a bucket conveyor type which is disposed within the scaffolding device 16 instead of the sixth conveyor 39, and 47 is an eighth conveyor whose base end is supported by the scaffolding device 16 so as to be movable up and down. , the aggregate 32 and sand 33 received from the seventh conveyor 46 are supplied into the batcher plant 20.

Hereinafter, the effects of the above configuration will be explained. First, as shown in FIGS. 2 and 4a, the tower 12 and scaffolding device 16 are placed on the planned construction site 14.
is constructed, the bridge girder 17 is installed, and the aggregate stock piles 21 to 24 shown in Figs. Aggregate 32 is introduced and conveyed from sand pile 25 to second, first and third conveyors 35, 3.
4 and 36 into the sand stocker 30, and then the aggregate 3 is fed from each stocker 26 to 30.
2. The sand 33 is transferred to the fourth, fifth, and sixth conveyors 37,
38, 39 into the batchia plant 20, and cement, admixtures and water from the cement silo 40, admixture stocker 41 and water tank 42 are fed into the batchia plant 20 via respective supply pipes 43, 44, 45. Insert within 20 minutes. In each hopper of the batch plant 20, the aggregates 32, sand 33, admixtures, cement, admixtures, and water are weighed with a measuring device to have a predetermined ratio, and then a mixer is operated to knead them. Then open each hopper in turn and pour ready-mixed concrete onto the planned construction site 1.
4 and place concrete. Then the fourth
As shown in FIG. b, as the dam concrete placement surface 15 rises, the tower 12 is raised to make it taller, and the sixth conveyor 39 is rotated upward. Next, when the dam concrete placement surface 15 reaches a preset height, the sixth conveyor 39 is removed and the scaffolding device 16 is raised to make it taller, as shown in FIGS. 3 and 4C. , and the scaffolding device 16 is provided with seventh and eighth conveyors 46, 47.
Install. Next, in Figure 4, d→e→f→g
As concrete was poured in order, Tower 1
2 and the scaffolding device 16 and construct the dam body 13 as shown in Fig. 4h,
The batch plant 20 and the first and eighth conveyors 46, 47 may be removed, and the portions of the tower 12 and scaffolding device 16 that protrude from the dam body 13 may be cut out.

In the above embodiment, the seventh
Instead of using the conveyor 46, as shown in FIG. An elevator method may be adopted in which the lid of the container is opened and the aggregate 32, sand 33, and admixture therein are delivered to the eighth conveyor 47 (second embodiment).

A third embodiment of the present invention will be described based on FIG. In this embodiment, a tower 12 is constructed at the end of a planned dam construction site 14, and a telescopic belt conveyor whose base end is supported on the ground 18 so as to be able to move up and down, and whose tip end extends above the batch plant 20. 50 is provided, and a scaffolding device 16 for supporting the belt conveyor 50 is provided.

The operation of the third embodiment is almost the same as that of the first embodiment, so the explanation will be omitted.

Effects of the Invention As described above, according to the present invention, ready-mixed concrete is manufactured by kneading raw materials in a batch plant at the planned dam construction site, so the transportation distance of ready-mixed concrete is shortened compared to the conventional method. The conveyance efficiency is good, the aggregate does not separate from the ready-mixed concrete, and the power required for conveyance can be reduced.Furthermore, the batch plant can be removed from the tower after the dam body is completed. , the batchia plant can be reused.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional example, FIGS. 2 to 4 show a first embodiment of the present invention, FIG. The schematic side view and FIG. 4 are explanatory diagrams showing the dam construction procedure. FIG. 5 is a schematic side view of essential parts showing a second embodiment of the invention, and FIG. 6 is a schematic side view of essential parts showing a third embodiment of the invention. 12...Tower, 13...Dam body, 14...
Planned construction site, 15...Dam concrete placement surface,
16...Scaffolding device, 20...Batchiya plant,
34 to 39...1st to 6th conveyors, 46...
7th conveyor, 47... 8th conveyor, 48...
Box, 49...Hoisting machine, 50...Belt conveyor.

Claims (1)

[Claims] 1. Construct a tower at a suitable location on the planned construction site of the dam body, place a batchia plant inside the tower so that it can be raised and lowered, supply raw materials to the batchya plant, and mix the raw materials with a mixer inside the batchya plant. The ready-mixed concrete is then supplied from the Battiya plant to the planned dam construction site and poured.The tower is raised as the dam concrete pouring surface rises, and the legs of the tower are attached to the dam. It is buried in concrete, and after the dam body is completed,
A method for supplying concrete for dam construction, characterized by removing a bath plant and cutting off a portion of a tower that protrudes from the dam body.